Java
public class Solution {
public int countSegments(String s) {
if(s.equals("")) return 0;
int count=0;
for(int i=0;i<s.length()-1;i++)
{
if(s.charAt(i)!=' '&&s.charAt(i+1)==' ')
count++;
}
if(s.charAt(s.length()-1)!=' ') count++;
return count;
}
}
Javascript，利用split
/**
* @param {string} s
* @return {number}
*/
var countSegments = function(s) {
if(s==="") return 0;
var count=0;
var m=s.split(" ");
for(var i=0;i<m.length;i++)
{
console.log(m[i]);
if(m[i]!=="")
count++;
}
return count;
};
优解，Java，有想法
public int countSegments(String s) {
return ("x " + s).split(" +").length - 1;
}
